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All results from a given calculation for NH2NO2 (nitramide)

using model chemistry: MP2=FULL/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes CS 1A'

Conformer 1 (C2V)

Jump to S1C2
Vibrational Frequencies calculated at MP2=FULL/3-21G*
Rotational Constants (cm-1) from geometry optimized at MP2=FULL/3-21G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1
Energy calculated at MP2=FULL/3-21G*
 hartrees
Energy at 0K-258.652146
Energy at 298.15K-258.656882
HF Energy-258.126514
Nuclear repulsion energy120.888989
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP2=FULL/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3431 3252 18.40      
2 A' 1648 1563 48.67      
3 A' 1241 1176 116.10      
4 A' 949 900 102.07      
5 A' 759 719 214.96      
6 A' 641 607 28.71      
7 A' 578 548 35.10      
8 A" 3586 3400 27.30      
9 A" 1736 1646 13.06      
10 A" 1256 1191 13.49      
11 A" 491 466 7.45      
12 A" 320 303 38.65      

Unscaled Zero Point Vibrational Energy (zpe) 8317.6 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 7885.1 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP2=FULL/3-21G*
ABC
0.37357 0.36306 0.18555

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.083 -1.317 0.000
N2 0.006 0.153 0.000
O3 0.006 0.713 1.163
O4 0.006 0.713 -1.163
H5 -0.362 -1.630 -0.866
H6 -0.362 -1.630 0.866

Atom - Atom Distances (Å)
  N1 N2 O3 O4 H5 H6
N11.47192.34112.34111.02231.0223
N21.47191.29091.29092.01542.0154
O32.34111.29092.32583.12092.3900
O42.34111.29092.32582.39003.1209
H51.02232.01543.12092.39001.7318
H61.02232.01542.39003.12091.7318

picture of nitramide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 N2 O3 115.694 N1 N2 O4 115.694
N2 N1 H5 106.409 N2 N1 H6 106.409
O3 N2 O4 128.537 H5 N1 H6 115.776
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability